Bronze composition and process of making same



- UNITED STATES PATENT OFFICE.

ADOLF SOIIWENTERLEY, OF NEW YORK, N. Y., ASSIGNOR TO THE NATIONAL WATER BRONZE COMPANY, OF NEW YORK.

BRONZE COMPOSITION AND PROCESS OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 613,944, dated November 8, 1898.

Application filed October 6, 1897. Serial No. 65%259. (No specimens.)

To all whom it may concern:

Be it known that I, ADOLF SOHWENTER- LEY, a subject of the Queen of Great Britain, residing at New York, (Brooklyn,) in the county of Kings and State of New York, have made certain new and useful Improvements in Bronze Compositions and Processes of Making Same, of which the following is a specification.

My invention relates to compositions, such as bronze powders and the like, such as are employed for painting, printing, and other purposes, and to the process of making the same.

It is the object of my invention to provide a bronze powder which will not require the admixture therewith of adhesive and volatile oils in order to enable the suspended powder to be applied.

In the use of bronze powders, especially for painting, it is customary before applying the powder to the surface which is to be painted to mix the powder with a volatile and adhesive oil, such as banana-oil, or other fluids, and when the mixture is of the desired consistency it is then ready for use.

The mixing of the bronze powder with the oil or other fluid, as before stated, is necessitated through the absence from the bronze powder of any contained adhesive substance.

It is also well known that after the bronze powder is mixed with the oil or other fluids the oil or said other fluids quickly evaporate andleave the powder in a caked condition, unfit for use.

produced to my knowledge.

The ingredients of my powder in its dry form are as follows, in and about the follow- By the practicing of my in-- vention I obviate all of these difficulties.v

ing proportions, which may be varied to suit particular conditions: alum powder, pulverized, one-quarter of an ounce; oil of citronella,one-quarter of an ounce; glycerin,threequarters of an ounce; one pound of ordinary bronze powder or other powdered coloringmatter, and three ounces of powdered dextririe that is to say, to one-quarter of an ounce of alum powder, one-quarter of an ounce of oil of citronella, and three-quarters of an ounce of glycerin I prefer to employ one pound of ordinary bronze powder, and for every pound of the ordinary bronze powder employed I prefer to add three ounces of powdered dextrine. In

certain cases I may omit the alum. These ingredients I compound together as follows, the order of the steps hereinafter recited being varied to suit'the particular conditions I use: I mix the fluid ingredients together-namely, the oil of citronella and the glycerinin preferably the quantities above mentioned. The powders-namely, the alum, dextrine, and bronze or other colorp0wder-I thoroughly mix, the operation of mixing the fluids and the powders separately being accomplished in any suitable vessel. I then place the fluidsnamely, the oil of citronella and the glycerinin a suitable spraying device,the intermingled or mixed powders being placed in a suitable vessel, wherein the fluids while being sprayed over the powders become thoroughly intermingled therewith. It is preferred that the mixing or kneading of the oils with the powders during the spraying operation be had with aforked or fingered instrument, which will thoroughly mix the oils and cause the oils to intimately commingle with and coat the particles of powder. The mixing vessel should be heated-say by steam-pipes and the like-to about an average temperature of 86 Fahrenheit, this heating of the powder during mixing vaporizing the fluids in order to cause them to thoroughly impregnate the powder. The oils, besides-bringing the mass to adough-like consistency, act as a binder to hold the powdered coloring-matter in suspension. When the mass is thoroughly mixed, it is subjected to preferably the same degree of heat, preferably for about twenty=four hours, in addition. The massis then broken up if found to be caked and passed through a sieve of very fine mesh, which reduces the mass to a pulverulent condition, at the same time excluding the particles of bronze of excessive size and other impurities. I do not limit myself to this method of pulverizin g the caked mass or of relieving it of impurities, as any other suitable method can be employed for this purpose. The mixture is then ready for use by adding the desired quantity of the powder to suflicient water to render it fluid. The addition of the water, it is believed, dissolves the dextrine and the alum powder, concentrates the mass, making it pasty, and the glycerin and oil of citronella cause the mass to flow freely, the oils forming the fluid adhesive carrier for the suspended coloring-matter. The dextrine acts as a binder.

I do not limit myself to the employment of bronze powder in making my compound, as it is apparent that any powdered coloring material may be employed with but little, if any, change in the quantities of the ingredients above named.

Having described my invention, I claim- 1. A powdered coloring material, comprising the following ingredients in and about the proportions specified to wit: oil of citronella, one-quarter of an ounce; glycerin, three-quarters of an ounce; powdered dextrine, three ounces; and one pound of bronze powder intimately commingled and reduced to a pulverulent condition, substantially as and for the purpose set forth.

2. The powdered coloring composition, comprising pulverized alum, oil of citronella, glycerin, powdered dextrine, and bronze powder intimately commingled and reduced to a pulverized condition, substantially as' and for the purposes described.

3. A powdered coloring material, comprising the following ingredients in and about the proportions specified, to wit: powdered alum, one-quarter of an ounce; oil of citronella, one-quarter of an ounce; glycerin, three-quarters of an ounce; powdered dextrine, three ounces; and one pound of bronze powder, intimately commingled and reduced to a pulverulent condition, substantially as and for the purposes set forth.

4. The process of making the powdered coloring material which consists in mixing a powdered coloring material with a powdered binder, spraying onto the powder a compound of citronella and glycerin, kneading the mass during the spraying operation, and heating the mass during such commingling or mixing operation, substantially as herein set forth.

5. The process of making a powdered coloring material which consists in the following steps: first, mixing the powdered coloring material with a powdered binder; second, spraying a suitable liquid vehicle onto the mass; third, kneading the mass during the spraying operation; fourth, heating the mass during the application of the second and third steps as above set out, all substantially as described.

Signed in the city, county, and State of New York this 4th day of October, 1897.

ADOLF SGHl/VENTERLEY.

Witnesses:

MILTON G. BUTTERFIELD, MARK M. SoHLEsINeER. 

